单项选择题

Passage B

Questions 26 to 30 are based on the passage you have just heard.

A．Smaller circles.
B．Bands of color.
C．A large white disc.
D．Curved legs of light.

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单项选择题

单项选择题

Passage B Questions 26 to 30 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。